Aviary netting... need help!

Hi all I just got 2 European Shelducks and need to find some aviary netting, approx 25' x 50' or so, where do I find this? It doesn't seem like any of my local stores have it, and it's all very expensive on eBay and other shopping sites...

I couldn't find aviary netting locally ~ only bird net for fruit trees. I bought my aviary netting from Cutler Supply It is very heavy duty and comes in many sizes. I really like it although when we got 10" of heavy snow last night, I did go out twice and knock the snow off of it as it was accumulating on top of it and weighting it down. It popped right back in place once the snow was off.

It's not the best picture, but the coop on the right has the run covered with the aviary netting.